Selfconsistent gauge-invariant theory of in-plane infrared response of high-Tc cuprate superconductors involving spin fluctuations

Abstract

We report on results of our theoretical study of the in-plane infrared conductivity of the high-Tc cuprate superconductors using the model where charged planar quasiparticles are coupled to spin fluctuations. The computations include both the renormalization of the quasiparticles and the corresponding modification of the current-current vertex function (vertex correction), which ensures gauge invariance of the theory and local charge conservation in the system. The incorporation of the vertex corrections leads to an increase of the total intraband optical spectral weight (SW) at finite frequencies, a SW transfer from far infrared to mid infrared, a significant reduction of the SW of the superconducting condensate, and an amplification of characteristic features in the superconducting state spectra of the inverse scattering rate 1/tau. We also discuss the role of selfconsistency and propose a new interpretation of a kink occurring in the experimental low temperature spectra of 1/tau around 1000cm^{-1}.

arXiv comment9 pages with 6 figures, submitted to Physical Review B

References in corpus (19)

• LDA energy bands, low-energy Hamiltonians, t', t'', t_{perp}(k), and J_{perp}
• Powerlaw optical conductivity with a constant phase angle in high Tc superconductors
• High-transition-temperature superconductivity in the absence of the magnetic-resonance mode
• Coupling strength of charge carriers to spin fluctuations in high-temperature superconductors
• Spin Susceptibility in Underdoped $\mathbf{YB}{\mathbf{a}}_2\mathbf{C}{\mathbf{u}}_3{\mathbf{O}}_{6+\mathbf{x}}$
• Effect of the magnetic resonance on the electronic spectra of high Tc superconductors
• In-Plane Spectral Weight Shift of Charge Carriers in $YB{a}_{2}C{u}_3{O}_{6.9}$
• Inversion of K${}_3$C${}_{60}$ Reflectance Data
• "Kinks", Nodal Bilayer Splitting and Interband Scattering in YBCO
• On the optical conductivity of Electron-Doped Cuprates I: Mott Physics
• Infrared conductivity of a d_{x^2-y^2}-wave superconductor with impurity and spin-fluctuation scattering
• Dispersion Anomalies in Bilayer Cuprates and the Odd Symmetry of the Magnetic Resonance
• Singularities in the optical response of cuprates
• Ward identity and optical-conductivity sum rule in the d-density wave state
• Optical Conductivity and Hall Coefficient in High-Tc Superconductors: Significant Role of Current Vertex Corrections
• Quasiparticles in high temperature superconductors: consistency of angle resolved photoemission and optical conductivity
• Interpretation of the in-plane infrared response of the high-Tc cuprate superconductors involving spin fluctuations revisited
• Optical conductivity of unconventional charge density wave systems: Role of vertex corrections
• Optical sum in Nearly Antiferromagnetic Fermi Liquid Model

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• Self Energy and Fluctuation Spectra in Cuprates: Comparing Optical and Photoemission Results
• Role of the upper branch of the hour-glass magnetic spectrum in the formation of the main kink in the electronic dispersion of high-T${}_{\text{c}}$ cuprate superconductors